Wireless telegraph and telephone instrument



March 4, 1924. 1,486,049

G. B. SPRING WIRELESS TELEGRAPH AND TELEPHONE INSTRUMENT Filed Oct. 21 1922 atented Mar. 4, 1924.

. TED

GEORGE 3. SPRING, OF MILFORD, NEW HAMPSHIRE.

WIRELESS TELEGRAPH AND TELEPHONE INSTRUMENT.

Application filed October 21, 1922. Serial No. 596,011.

To all whom it may concern:

Be it known that I, GEORGE B. SPRING, a citizen of the United States, residing at Milford, in the county of Hillsborough and State of New Hampshire, have invented certain new and useful Improvements in Wireless Telegraph and Telephone Instruments, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in wireless telegraph and telephone instruments, and more articularly to a circuit completing device or completing the aerial or ground circuit of receiving instruments.

An important object of the invention is to provide a device for completing an aerial circuit which acts either as the aerial or ound of the circuit and which is applied to the body of the operator.

A further object of the invention is to provide a device of this character which is a plied simply by placing the ear pieces of tlie head set in position upon the head of the operator.

A still further object of the invention is to rovide a device of this character which while capable of incorporation in the con-' struction of the head set, may be so formed as to be a plicable to the receiver portions of the hea sets now in use.

Another object of the invention is to provide metallic contact pieces adapted to cover the cap of the ear piece of the receiver and which by its contact with the body of the operator when the ear pieces are in position may be employed either as an aerial or ground connection for the receiving set by simply electrically connecting the same to the proper terminal of the set.

An additional object of the'invention is to is s imple in its construction and arrangement, may be readily applied to or incorporated in a receiver, and which will in no manner interfere with the ordinary operation of the receiver.

These and other objects I attain by the construction and arrangement shown in the accompanyinlg drawings, wherein for thepurpose of i tration is shown a preferred embodiment of my invention and wherein like reference characters designate like parts throughout.

In the drawings Figure 1 is a fragmentary side elevation rovide a device-of this character which.

showing apparatus constructed in accord- 1 ance with myinvention applied to a receiving set as a ground therefor;

Figure 2 is a side elevation of a receiver showing the device attached thereto, parts being broken away; and

Fi ure 3 is a plan view of the connector detac ed.

Referring now more particularly to the drawings, the numeral 10 indicates the cap of a receiver which, as well known to those familiar with the art, is formed of insulat mg material such as hard rubber or the like. These caps are provided centrally with an opening 11 so that the sounds emanating from the diaphragm 12 may be readily transmitted to the ear of the receiver. In accordance with my invention, I provide a metallic cap 13 ada ted to fit over the cap of the receiver an which conforms sub stantially to the. shaping of the outer face thereof, this cap being provided centrally w1th an opening 14 aligning with the open ing 11 of the receiver cap.

The cap 13 is provided with a binding post 15 by means of which a lead wire 16 may be connected to the same, the opposite end of this wire being attached either to the aerial connection 17 or the ground connection 18 of the receiving set 19 as may be desired. Where the head set employed in connection with the receiving set 19 embodies two receivers, a cap 13 is applied to each of the receivers and the wires connected therewith are joined, as at 20, for connection to the terminal 17 or 18 as the case may be. The manner of connecting or securin the ca 13 to the receiver cap 10 may ta e any esired form, in the present instance the cap 13 being shown as spun upon the receiver cap 10 to thereby mechanically join the same.

It will, of course, be obvious that the construction hereinbefore shown is not only capable of modification to a great extent but it-will likewise be obvious that other means might be employed for connecting the areial and ground connections 17 or 18 with the body of the operator without departing from the spirit of the invention. It has been found that where this electrical connection is established, if established with the aerial terminal of the receiving set 1 9, no other aerial is necessary, and if established with the ground connection, no other ground connection is necessary. Many changes and modifications being possible as above set forth, I do not limit myself to the specific arrangement or structure disclosed except as hereinafter claimed.

I claim 2-- 1. An aerial for wireless receiving sets embod ing a receivin head set comprising a meta ic cap carried y the receiver of the head set and adapted to on age against the ear of the wearer, and an e ectrical connection between said metallic cap and the aerial bindin post of the receivin set.

2. Lfeans for connecting t e human body for use as an aerial or ground for wireless "receiving sets including a metallic cap superimposed upon the cap of the receiver of the head set of the receivingset and adapted for electrical connection with the aerial or ground terminal of the receiving set.

brought into contact with the b0 y by application of the head set to the head, and means for connecting said contact with the (18:18,]. or ground terminal of the receiving se In testimony whereof I hereunto aflix 80 my signature.

GEORGE B. SPRING. 

